E. Rossoni proposes that the surname derives from place names such as Cà Vecchia, present in the Vicenza and Mantua areas, Casavecchia di Tiglieto in the Genoa area, or Cascina Vecchia in the Alessandria area. Rossoni also contemplates the possibility that the surname reflects a characteristic of the dwelling of the first bearer of the surname.

F. De Laurentiis agrees on the toponymic origin and specifies that the term is a compound of ca (house) and vecchia (old), noting that place names such as Cà Vecchia, in the Mantua area, and Casavecchia, documented in the Genoa, Macerata, L'Aquila and other areas, are widely distributed throughout the Italian peninsula.